These points are also on the negative side of the x axis, at -pi/4 and -pi/2. When we move along the x axis, notice what happens to the y value. On the left side of zero, tangent is negative. At x=-pi/4, tangent=-1.
The Independent Online. David Cameron may have called a referendum on the EU to blackmail Europe, according to Vladimir Putin. The Russian president also questioned Mr Cameronâs decision to call the vote, as it has caused a âgreat problemâ.
Putin and Trump Talk on Phone and Agree to Improve Ties, Kremlin Says. President Vladimir V. Putin of Russia in Berlin in October. He and President-elect Donald J. Trump spoke about Syria during a call on Monday. MOSCOW â President Vladimir V. Putin of Russia and President-elect Donald J. Trump spoke by telephone for the first time on Monday, agreeing to review what both consider the poor state of relations between the two countries, according to a statement from the Kremlin.